what is the answear pls

ar ER 3 ball & stick + labels Which of the following represent structural isomers of the molecule shown Choose all that apply. CH3 CH3 CH3-CH -bo-com CH2-CHE CH CH3 CH3-CH-CH2-CH2-CH.CH . CH3-CH2-CH-CH2-CH2-CH, CH3 CH, CH3 , CH-CH-CH-CH.CH CH, CH ,- -C CH-CH I CHA